Radiospurs Header

The Radiospurs Header Website

The well known site for RF and Microwave analysis, design, calculators.

If you work on the Technical Side of the Radio Broadcast Industry, this is your gateway to design the hardware of your profession. There are articles on FM transmitters, Propagation analysis using Longley Rice calculations. Passive filters, microwave filters. Power combiners, Wilkinson, Hybrid. Couplers, microstrip, stripline, edge, broadside, slabline, coax. Interdigital filters, capacitive gap, edge coupled. Its all here.

See WEB SITE DETAILS above for a more complete description of each web site.

Where do you want to go?

General Broadcasting. Stereo Encoder, RDS Encoder etc...

Passive filters. Butterworth, Chebychev 1, 2, Bessel, Legendre, Bessel, Elliptic

Combiners (Wilkinson 2, 3, 4 way, multistep, with filter), Hybrid

RF Components, RF Capacitors, Inductors, Microwave Gap, DC Block

Microstrip(normal, suspended, inverted, with substrate, edge couplers)

Stripline (normal, mixed, slabline, power line, edge coupler, broadside)

Stepped line transformer

Microwave filter, Interdigital, Combline, Parallel Coupled, Gap Resonator

Cascade microstrip couplers (Symmetrical, Asymmetrical, Custom

Power Pads (Phi, Delta)

Propagation (Path loss, Friis, Egli, Great Circle, Longley Rice)

Waveguides, Meteorology, SNMP engines

Interactive Propagation Analysis, Radio Link, Broadcast

Antenna Analysis, Yagi, Log Yagi, Horn, Helix, Reflector

Fast Links

Image donated by Seratel

NEWS:

New July 2026

The translation to the new all CORE site is now complete. Now roll in with the broken links!

A number of calculations have been made clearer. There is now a high pass Chebychev11 (Inverted Chebychev) Filter. The elliptic filter design now converges better.

Our companion site LongleyRice is now more complete. Better explaining of the ITM and some new documentation.

Finally: My site aims are fairly complete. However there is still room for some more calculators, so give me some hints as to what could be of use to those genuine engineers out there.

For microwave101 users. note: Free housing has been offered but no reply...